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16 May 2015

blog-aufmacher

The ZelosLaser Engraver is affordable, with a compact design and the perfect entry for the Daily Hobbyist.

What are the characteristics of the ZelosLaser Engraver?

  • Work area *Normal* 300mm x 200mm
  • Housing dimensions Normal 440mm x 350mm x 220mm
  • Work area *BIG MAMA* 660mm x 650mm
  • Housing dimensions *BIG MAMA* 800mm x 800mm x 220mm

Affordable Opensource Arduino Laser Engraver for Everbody – [Link]

9 Mar 2015

p

by 3dpburner.blogspot.com.es:

It is created with the same concept as RepRap, using 3D printed parts and some easy to find “vitamins” (non printed hardware).

I tried to make it as cheap as possible, by using cheap electronics and a “low power” laser (a laser diode).
The X/Y working area is fully customisable and the max working object height is up to 50-60mm.

The cutter/engraver basically uses the 3D printed parts, M8 and M3 size hardware (rods, nuts,washers and bolts), some small bearings and GT2 pulleys and belts. I got most of the parts from my “old” RepRap printer.

The X/Y working area is fully customsable by changing the length of the 8mm rods.

The electronics uses an Arduino UNO with a cheap CNC shield and two Pololu based stepper drivers to drive two NEMA17 stepper motors.

3dpBurner – A 3D printed laser cutter/engraver – [Link]

29 Jan 2015

FUQ36YAHVVKH6NM.MEDIUM

by ronnietucker @ instructables.com:

So, first thing I did was to get the LCD and keypad working together.

For this I pretended that it was some sort of arm/disarm (or entry/exit) thing.

My code for this part is at: http://pastebin.com/YndLneqm.

Getting the LCD wired up was tricky as most wiring diagrams for it don’t show the last two pins wired up and these are required for the back light. Check my snazzy Fritzing wiring diagram to see how I wired up my LCD screen, pot (for adjusting brightness) and keypad. The pins for them all are also mentioned in my code.

Arduino Laser Trip Wire – [Link]

6 Oct 2014

NewImage41

A group of engineers have developed the smallest organic laser [via] :

The 8-µm-long device, which looks like a suspended bridge riddled with holes, is carved into a silicon chip coated with an organic dye. Integrated into microprocessor chips, such tiny lasers could one day speed up computers by shuttling data using light rather than electrons. They also could be valuable for sensors and lab-on-a-chip devices.

Engineers Build Ultrasmall Organic Laser – [Link]


16 Jul 2014

Laser-Engraver-38x38_cdrom_1-600x450

Here’s a DIY 38mm x 38mm laser engraver build using CD-ROM/writer on ATmega328p by Davide Gironi:

A laser engraving machine, is a tool that uses lasers to engrave an object.
To build this tool I’ve used two old CD-ROM writer that lays around in my garage.
The X/Y positioning system it is build using the CD-ROM motor assembly. For the engraving laser i use the CD-ROM writer laser.
With this hardware the engraving area are will be almost 38mm x 38mm.

[via]

A DIY laser engraver build using DVD and CD-ROM/writer – [Link]

5 Jul 2014

What’s inside one of those omni-directional laser barcode scanners you use at the supermarket, and how does it work? Motorola / Symbol LS9208

EEVblog #637 – Omni Directional Laser Barcode Scanner Teardown – [Link]

30 Apr 2014

lt1683_laser_diode_driver

by Kalle Hyvönen:

Here’s a quick project I made in couple days or so. It is a push-pull step-down laser diode driver based on LT1683 SMPS controller chip from Linear Technology. The circuit works with 12-18V input and can put out about 1A to a 2V load. I used a PL140-105L planar ferrite transformer from Coilcraft which is quite overkill for this application (it is rated for 140W).

Switchmode laser diode driver based on LT1683 – [Link]

27 Apr 2014

od_2634_1_1396968248

Ian D. Miller made a Raspberry Pi powered laser engraver using two old DVD RW drives. He writes:

engravR is a Raspberry Pi powered laser engraver built primarily using two old DVD RW drives. It was built following the following tutorial: http://funofdiy.blogspot.com/2013/10/a-raspberry-pi-controlled-mini-laser.html Note that I did make changes to the code given there in order to allow remote engraving and to be able to read the kind of GCode that GCodeTools generates. It is available at the above GitHub link.

engravR – RPi Laser Engraver – [Link]

5 Apr 2014

F2KB86THTM2NHK4.MEDIUM

joebell @ instructables.com writes:

With a little practice, you can make excellent double-sided PCBs by combining a laser cutter with chemical etching. The basic idea is: the laser cutter blasts away spray painted etch resist, then chemicals eat away the exposed copper. Once the copper is gone, the underlying board can be cut again with the laser to make through-holes. No drilling required! After some setup and practice, you should get reliable boards with 8-mil trace/space and hundreds of holes in about 2 hours. You can even cut internal routing and odd board-shapes!

Double-sided PCBs with a laser cutter – [Link]

4 Apr 2013

Laser-Cutter

You can use this cutter to cut very accurate PCB stencils on your home:

Are you sick and tired of using a tooth pick to apply solder paste? Are you still using through hole components because you don’t want to deal with soldering surface mount devices (SMD)? If so, this post provides you with guidelines for building your very own laser cutter for cutting PCB stencils. With a total cost of approximately $200 (it can be significantly less if you already have parts laying around), this project can pay for itself very quickly. While you can get “low cost” stencils for your PCBs, they still can be quite expensive if you are only creating one or two boards.

DIY Laser Cutter for PCB Stencils – [Link]



 
 
 

 

 

 

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